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**solve for x: x^-2 = 1/9**

**solve for x: x^-2 - 13x^-1 +36 = 0**

**I don't understand how to solve either equations.**

- Thread starter Brittany8209
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Mentallic

Homework Helper

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Remember that [tex]x^{-a}=\frac{1}{x^a}[/tex] so try multiplying through by x^{2} in both.

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